Inventor · disambiguated record
Lopek Drzewiecki
Also filed as: DRZEWIECKI LOPEK
7 granted patents·1 pending application·96 citations·filing 2003–2013
84Inventor score
Files withNAT OILWELL LP4DRZEWIECKI LOPEK1INTELLISERV LLC1NAT OILWELL VARCO LP1NAT OILWELL VARCO NORWAY AS1
Top patents by PatentIndex Score
8 records- 0181US7523694B2Cylinder liner preload systemNAT OILWELL LP·Filed 2005·Granted Apr 28, 2009·9 cites·20 claims
- 0274US7121166B2Power tong assemblyNAT OILWELL LP·Filed 2004·Granted Oct 17, 2006·48 cites·6 claims
- 0364US9428972B2Simultaneous clamp and torque driveNAT OILWELL VARCO NORWAY AS·Filed 2012·Granted Aug 30, 2016·3 cites·30 claims
- 0463US6910402B2Pipe spinnerNAT OILWELL LP·Filed 2003·Granted Jun 28, 2005·28 cites·17 claims
- 0545US7594683B2Pipe elevator with rotating doorNAT OILWELL VARCO LP·Filed 2005·Granted Sep 29, 2009·1 cites·13 claims
- 0642US7111676B2Pipe centering deviceNAT OILWELL LP·Filed 2004·Granted Sep 26, 2006·7 cites·18 claims
- 0741US2013199845A1Wellsite Communication System and MethodINTELLISERV LLC·Filed 2013·Application pending·0 cites
- 0833US8161846B2Apparatus and methods for spinning a pipeDRZEWIECKI LOPEK·Filed 2009·Granted Apr 24, 2012·0 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →